Rockwell Automation 20G PowerFlex 750-Series Power Jumpers - Manual (Page 3)

Rockwell Automation Publication 750-IN011E-EN-P - February 2014 3
PowerFlex 750-Series Power Jumpers
Power Jumper Configuration
Table 1 - Recommended Power Jumper Configurations – Frames 1…7
Table 2 - Recommended Power Jumper Configurations – Frames 8…10
To connect or disconnect these devices, refer to pages 5 … 7 .
In addition, on an ungrounded distribution system where the line-to-ground
voltages on any phase could exceed 125% of the nominal line-to-line voltage,
install an isolation transformer. See Wiring and Grounding Guidelines for PWM
AC Drives, publication
DRIVES-IN001 for more information on impedance
grounded and ungrounded systems.
ATTENTION: Risk of equipment damage exists. The drive power source type
must be accurately determined. Jumpers PE-A, PE-A1, PE-A2 and PE-B must be
configured for the power source type according to the recommendations shown
below.
Power Source Type
Jumper PE-A
(1) (2)
(MOV / Input Filter Caps)
(1) When MOVs are disconnected, the power system must have its own transient protection to insure known and controlled voltages.
(2) Frame 5…7 Common DC Input drives do not have the PE-A jumper.
Jumper PE-B
(DC Bus Common Mode Caps)
Benefits Of Correct
Configuration on Power
Source Type
Non-Solid Ground
• AC fed ungrounded
• Impedance grounded
• B phase ground
• DC fed from an active converter Disconnected Disconnected Helps avoid severe
equipment damage when
ground fault occurs.
Solid Ground
• AC fed solidly grounded
• DC fed from passive rectifier
which has a solidly grounded
AC source
Connected Connected Reduced electrical noise,
most stable operation,
EMC compliance, reduced
voltage stress on
components and motor
bearings.
Power Source Type
Jumper PE-A1
(1)
(MOV)
Jumper PE-A2
(Input Filter Caps) Jumper PE-B
(DC Bus Common Mode Caps)
Benefits Of Correct
Configuration on Power
Source Type
Non-Solid Ground
• AC fed ungrounded
• Impedance grounded
• B phase ground
• DC fed from an active converter Disconnected Disconnected Disconnected Helps avoid severe
equipment damage when
ground fault occurs.
Solid Ground
• AC fed solidly grounded
• DC fed from passive rectifier
which has a solidly grounded
AC source
Connected Connected Connected Reduced electrical noise,
most stable operation,
EMC compliance, reduced
voltage stress on
components and motor
bearings.
(1) When MOVs are disconnected, the power system must have its own transient protection to ensure known and controlled voltages.
IMPORTANT Common mode capacitors are used to conform with the EMC directives.
Removing these devices can withdraw the associated directive.